Measurements of the <math><mtext>b</mtext><mtext>b</mtext><mtext>̄</mtext></math> production cross section and forward–backward asymmetry at centre-of-mass energies above the Z pole at LEP

Dova, María Teresa; L3 Collaboration

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dc.date.accessioned	2019-05-31T14:10:39Z
dc.date.available	2019-05-31T14:10:39Z
dc.date.issued	2000-07-13
dc.identifier.uri	http://sedici.unlp.edu.ar/handle/10915/75660
dc.description.abstract	The measurements of $R_{b} =σ(e^{+} e^{−} → b b ̄)/σ(e^{+} e^{−} → q q ̄)$ and of the b quark forward–backward charge asymmetry, Abfb, at centre-of-mass energies above the Z pole are described. The measurement of Rb is performed at 's between 130 and 189 GeV using a b-tagging method that exploits the relatively large decay length of b-hadrons. The measurement of Ab is fb performed using the large statistics event sample collected at 's s189 GeV with a lepton-tag analysis based on the selection ' b of prompt muons and electrons. The results at s =189 GeV are $R_{b} =0.163±0.013 (stat.) ±0.005 (syst.)$ , $A_{fb}^{b} =0.61±0.18 (stat.) ±0.09 (syst.)$	en
dc.format.extent	71-84	es
dc.language	en	es
dc.subject	bb production	en
dc.subject	Física	es
dc.subject	forward-backward asymmetry	en
dc.subject	centre-of-mass energies	en
dc.title	Measurements of the $b b ̄$ production cross section and forward–backward asymmetry at centre-of-mass energies above the Z pole at LEP	en
dc.type	Articulo	es
sedici.identifier.other	https://doi.org/10.1016/S0370-2693(00)00676-6
sedici.identifier.issn	0370-2693	es
sedici.creator.person	Dova, María Teresa	es
sedici.creator.person	L3 Collaboration	es
sedici.subject.materias	Ciencias Exactas	es
sedici.description.fulltext	true	es
mods.originInfo.place	Facultad de Ciencias Exactas	es
sedici.subtype	Articulo	es
sedici.rights.license	Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
sedici.rights.uri	http://creativecommons.org/licenses/by-nc-sa/4.0/
sedici.description.peerReview	peer-review	es
sedici.relation.journalTitle	Physics Letters B	es
sedici.relation.journalVolumeAndIssue	vol. 485, no. 1-3	es

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